Membranous glomerulonephritis in rheumatoid arthritis unrelated to gold, D-penicillamine or other connective tissue disease.

We report a 58-year-old woman with classical rheumatoid arthritis (RA) who developed a membranous glomerulonephritis (MGN). She had never been treated with gold or D-penicillamine; other connective tissue diseases as well as hepatitis B were excluded. We suggest that the responsible cause of MGN is RA.